Home / 145,422.90-218,134.35-89,435.70

Finding the Fourth Proportional to 145,422.90, 218,134.35 and 89,435.70

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Solution

The fourth proportional to 145,422.90, 218,134.35 and 89,435.70 is: 134,153.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,422.90 : 218,134.35 = 89,435.70 : x
  2. Step 2: Convert to fraction form
    145,422.90/218,134.35 = 89,435.70/x
  3. Step 3: Cross multiply
    145,422.90x = 218,134.35 × 89,435.70
  4. Step 4: Simplify right side
    145,422.90x = 19,508,998,286.30
  5. Step 5: Solve for x
    x = 19,508,998,286.30/145,422.90
  6. Step 6: Final answer
    x = 134,153.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.